// Copyright (c) 2020, OpenEmu Team
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of the OpenEmu Team nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY OpenEmu Team ''AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL OpenEmu Team BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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import Cocoa

class HoverButton: NSButton {
    
    private var trackingArea: NSTrackingArea?
    
    var isHovering: Bool = false {
        didSet {
            needsDisplay = true
        }
    }
    
    override func updateTrackingAreas() {
        super.updateTrackingAreas()
        
        if let trackingArea = trackingArea {
            removeTrackingArea(trackingArea)
        }
        
        let trackingArea = NSTrackingArea(rect: bounds, options: [.mouseEnteredAndExited, .activeInActiveApp], owner: self, userInfo: nil)
        addTrackingArea(trackingArea)
    }
    
    override func mouseEntered(with theEvent: NSEvent) {
        isHovering = true
    }
    
    override func mouseExited(with theEvent: NSEvent) {
        isHovering = false
    }
}
